Heating-stove.



Patented Apr. 29, i902.

@werden @www 1J-darn RCh/nocive,

In: ncnms crans ou. PHoTn-uwo.. wAsrqNafcm n. c.

UNITED STATES PATENT OEE-ICE."

EDWIN R. CAHOONE, OF NEWARK, NEW JERSEY.

H EATING-STOVE.

SPECIFICATION forming part of Letters Patent No. 698,804, dated April 29, 1902 Application filed lVIaroh 14, 1.901. Serial No. 51,177. (No model.)

To a/ZZ whom. t may concern:

Be it known that I, EDWIN R. CAHOONE, a'

citizen of the United States, residingat New# ark, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Heating-Stoves, of which the followingis a specification.

This invention relates to heating-stoves for burning soft or bituminous coal, and the improvements are directed more especially to the details of construction thereof.

The object of the invention is to provide an air-heating chamber around the fire-pot,- which communicates therewith, means for supplying air to said chamber, forming 'a space between the' re-pot and outer casing, with means for introducing air thereto, an exit-flue communicating with the space at the upper portion thereof, and means for controlling the radiance of heat.

A further object of my invention is to provide a sectional fire-pot having the meeting ends concave to form an air-heating chamber when the parts are assembled.

Many other objects and advantages will be hereinafter referred to, and be particularly pointed out in the claims.

In the drawings forminga part of this speciflcation, Figure 1 is avlongitudinal sectional view of my improved stove. Fig. 2 is a de. tail perspective view of the fire-pot, showing the parts separated. Fig. 3 is a horizontal section on line 3 3 of Fig. 1.

Referring to the drawings, 1 indicates the stove, having a grate 2, a tire-pot 3, and fuelmagazine 4.

The grate is supported on lugs 5, secured to the base 6; but any well-known means for supporting said grate maybe used. Thelugs 5 support the fire-pot and fuel-magazine, the former being made in two sections 7 and 3 and the magazine preferably being made in one piece. The meeting ends of the section 7 and 8 are somewhat thickened and concaved, and 'projecting radially from said meeting'ends are concaved lugs 11, forming air-inlets. The outer edges of the meeting ends of the sections meet' and practically seal the joint; but the edges toward the'inside of the re-pot are notched.

The construction thus described forms an air-heatin g chamber 13, supply-duets 14, and

,air-exits 15. To construct an air-heating chamber in this manner dispenses with the usual expense and separate handling incident Atochambers now in use for this purpose.

The lower section 7 of the fire-pot is composed of an upper ring-like portion 11, having depending bars or 'fingers 16 extending therefrom, and from two o r more of said fingers Vproject cup-shape lugs 17, fitting and resting on the upper notched edges of the lugs 5. The upper section 8 of the fire-pot is preferably of a fiaring formation and may or may ybelowkthe flue is a baffle-plate 22, extending upwardly toward the front of the stove and being provided with a damper 23, located directly under the flue, by means of which the radiating effect of the heat may be controlled.

Depending from the top of the stove are a series of air-inlet tubes 24, through which aircurrents are introduced above the bed of the fuel, a damper being employed to control the admission ofthe lair to said tubes.

At' the lower part of the casing are a series `of air-inlet openin`gs'25 and a damper 26, by

means of which a'sufcient quantity of air can be introduced to the passage 20, said air commingling with the products of combustion as theyescape from the fire-pot, tending to make said products more susceptible to ignition. As a furthermeans for assisting good combustion I--introduceheated air to the incandescent mass of the fuel through one or more tubes 27. f

Not infrequently it happens in stoves of this type that dust'or ashes and the like accumulate between the fire-pot, magazine, and the casing, and to remove it the structure is taken to pieces. To overcome this objection, I provide an opening 30 in the casing, near the top thereof, and insert therein either a bellows or a hose connection to dislodge the accumulation, it being obvious that a blast ofv air or stream of water injected in the space will thoroughly cleanse the parts.

I have also found the present structure Well IOO adapted for heating water and generating steam and have provided a steam-generator 33, which surrounds either the fire-chamber or the fuel-magazincli. The exits of the products almost entirely surround the structure, generating steam very rapidly.

The operation of my stove is substantially as follows: Fuel is supplied to the fire-pot and magazine through the feed-opening 40, and a sufficient amount of air is admitted through the tubes 24, whereupon the fuel becomes ignited. the bed of the fuel under the influence of the main draft and escape through the spaces formed between the depending fingers 1G of the lower section 7 of the tire-pot, and at this point the products are further mixed with the air coming in through the inlet-openings 25. Air-currents are also introduced to the fuel through the exit-openings in the air-heating chamber. These currents mingle with the air introduced through 'the tubes 24 and further assist in igniting the gases. As the products ascend the baffle-plate 22, the damper 23 being closed, detiects the said products toward the front of the stove,whereupon the products are again broken, and the molecules of any uuconsumed gas are once more made susceptible to ignition before escaping through the exit-flue 2l. However, should the radiation of heat from the stove not be equal the damper 23 is accordingly opened until the desired result is obtained.

Asis well known, in stoves of this character the most intense heat. is created at the extreme lower portion of the tire-pot, or, in other words,where the products of combustion pass from the tire-pot into the exit-passage. As a result of this action the lower end of the firepot is the first to require repairs, necessitating the replacing of the complete structure, which is not only expensive, but objectionable from many standpoints. It is therefore my purpose to provide a pot whereby this difficulty and expense is overcome. Moreover, to replace this feature does not require the services of one skilled in the art to make such repairs. On the other hand, any one having ordinary intelligence can perform the duty.

Should the top of the fuel become packed and prevent the admission of air therethrough, I provide an auxiliary air-supply pipe 50, which extends down near the bottom of the fuel and admits air thereto. The upper end of this pipe is open and is in such position as to always be above the top of the fuel-bed, and its lower end is likewise open to permit a free introduction of air to the fuel. It is evident, therefore, if the air delivered through the tubes 24 is prevented for anyreason from passing through the top of the fuelbed it will be iinmediatelydrawn through the pipe 50 and delivered in the heart of the mass.

Having thus fully described my invention,

The air-currents pass down through what I claim, and desire to secure by Letters Patent, is-

1. A stove comprising a casing, a fire-pot, a magazine, said tire-pot having aseries of pendent bars and lugs,flanges projecting from the casing for supporting said lugs, means for introducing air to a space between the magazine and tire-pot at a point where the products of combustion leave said fire-pot, and a bafe-plate in said space having a damper therein for controlling the radiance of heat, substantially as and for-the purpose set forth.

2. A stove comprising a casing, a fire-pot, having a series of slots, a magazine, means for supporting the fire-pot and magazine, an air-heating chamber having air-exits formed between the tire-pot and magazine, means for supplying air to said chamber, means for introducing air to the space formed between the re-pot and casing, an exit-Hue communicating with said space at the upper end, and means for controlling the radiance of heat.

A stove comprising a casing, a lire-pot having a series of depending bars and having a series of corresponding slots between said bars, a magazine, an air-heating chamber having air-exits between the fire-pot and magazine, means for supplying air to said chamber, means for supplying the space formed between the fire-pot and casing with air, an exitflue communicating with said space, tubes for introducing air to the body of fuel from the sides, and tubes for delivering currents of air downwardly through the fuel.

4. A stove, comprising a casing, a fire-pot having a series of depending bars and having spaces formed therebetween, lugs projecting from the fire-pot, flanges for supporting said lugs, an exit-flue communicating with the space formed between the fire-pot and casing, tubes adapted to deliver air downwardly through the fu'el, and means communicating at the upper end with the magazine, and at the lower end with the fire-pot below the top of the bed of the fuel, whereby air may be supplied to the fire-pot from the top if the fuel becomes packed.

5. A stove comprising a casing, a fire-pot provided with a surrounding air heating chamber, a space being formed between the fire-pot, magazine and casing, au exit-Hue communicating with said space, a bafe-plate in the space which inclines upwardly toward the front and provided with an opening and a damper, and means for delivering currents of air downwardly through the fuel under the influence of the draft.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

EDWIN R. CAHOONE.

Vitnesses:

Guo. E. FRECH, NV. A. WILLIAMS.

IOC

IIO 

